High Strength Austenitic Stainless Steel Having Excellent Hot Workability

Abstract: A high-strength austenitic stainless steel having excellent hot workability is disclosed. A high-strength austenitic stainless steel having excellent hot workability, according to one embodiment of the present invention, comprises, by wt%, 0.01-0.035% of C, 0.5% or less of Si, 0.5-1.5% of Mn, 17-22% of Cr, 6-11% of Ni, 1% or less of Mo, 1% or less of Cu, 0.1-0.22% of N, and the balance of Fe and inevitable impurities, wherein the value of formula (1) is 1.9 or more, or the precipitation temperature of chromium nitride satisfies a value represented by formula (2) or less. (1) 3×(Cr+Mo) + 5×Si - 2×Ni - Mn - 70×(C+N) - 27 (2) 1180 + 36×C + 12×Mo + 17×Cu + 411×N - 35×Mn

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